Rate of evaporation of petrol is greater than that of water at room temperature because
A. petrol molecules do not have any hydrogen bond
B. petrol is an organic compound
C. water molecules have small size
D. petrol molecules have greater size
Show Answer…...Hide AnswerCorrect Answer: A. petrol molecules do not have any hydrogen bond
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Substance having highest boiling point among the following is
A. HF
B. HCI
C. Br2
D. HBr
Show Answer…...Hide AnswerCorrect Answer: C. Br2
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What is the typical range of the hydrogen bond
A. 5–25 kJ per mole of bonds
B. 5-25 kJ per molecule
C. 500 kJ per mole of bonds
D. 1-2 kJ per mole of bonds
Show Answer…...Hide AnswerCorrect Answer: A. 5–25 kJ per mole of bonds
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Keeping in mind the concept of charge density, compound having highest lattice energy is
A. KCI
B. MgO
C. LiBr
D. NaF
Show Answer…...Hide AnswerCorrect Answer: B. MgO
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All of the following substances are crystalline except
A.Ice
B. Carbon (diamond)
C. Sucrose
D. Plastic
Show Answer…...Hide AnswerCorrect Answer: D. Plastic
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Which of the following is an example of a metaphor?
A. The sky is blue
B. She has a heart of gold
C. The sun is shining
D. The flowers are blooming
Show Answer…...Hide AnswerCorrect Answer: B. She has a heart of gold
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Which of the following is an example of a simile?
A. She is a rose in a garden of thorns
B. The sky is blue
C. He runs like the wind
D. The sun is shining
Show Answer…...Hide AnswerCorrect Answer: C. He runs like the wind:
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